Issue, when car is started and is cold the breaks are very hard even worst in reverse.

I recently replaced the old break fluid thinking it was the issue of the hard breaks while my vehicle warms up, it did not.

Any ideas?

I am assuming the break booster attached the the firewall, but have never worked on one before. Or maybe it is something else?

Thanks ahead of time.

 

Check the electric brake pump. When the engine is first started and you step on the brake pedal you should hear a pump kick on. I believe its job is to pull vacuum when engine vacuum is low due to this being a turbo car. (assuming 2000-2004 1.9L S40?)

 

It is a 2001.

Ah… Is it a vacuum pump under the fuse box on the driver side?

I noticed a blown fuse, replaced it, and the fuse blew again. I went to a pull-yard and got another unit. I would hear it turn on for roughly a week before it did the same thing. Possibly electrical, or…?

The breaks operate fine once they are warm, but I do not want it to turn into a bigger issue.

 

Do you know what grease was used for the sliding pins? Could be the grease gets 'hard' in cold weather. It takes silicone (synthetic) grease.

 

I had the same issue and it got to be very unsafe the colder it got. Once the car warmed up all was fine. Turned out that two vacuum hoses needed to be replaced. I caved and asked the dealership to fix. If you need the part numbers let me know.

 

No, "hard" grease is not the problem. lol

 

What?

 

Yes, anything will help. Were they easy to replace?

 

Some lubricants will seize in low temperatures, preventing the caliper pins to slide properly.

 

Here are the two parts that were replaced for my issue. Haven't had a problem since:

30620958 Hose
Stop light switch 9128577-5

 

Does the stop light switch just affect the lights?

I was having a hard time finding the hose with that number, do you recall what it looked like?

 

Here's a link to the part. As for the stop light swith I honestly don't remember the details of why that part was required.

30620958. Volvo. Hose.

 

Ahahahaha. I think you really believe that. lol